CA2610672C - Instrument for use in a joint replacement procedure - Google Patents
Instrument for use in a joint replacement procedure Download PDFInfo
- Publication number
- CA2610672C CA2610672C CA2610672A CA2610672A CA2610672C CA 2610672 C CA2610672 C CA 2610672C CA 2610672 A CA2610672 A CA 2610672A CA 2610672 A CA2610672 A CA 2610672A CA 2610672 C CA2610672 C CA 2610672C
- Authority
- CA
- Canada
- Prior art keywords
- disk
- bone
- metaphyseal
- component
- trial implant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 18
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 52
- 239000007943 implant Substances 0.000 claims abstract description 48
- 238000001356 surgical procedure Methods 0.000 claims abstract description 10
- 210000002758 humerus Anatomy 0.000 description 13
- 239000000463 material Substances 0.000 description 8
- 210000000323 shoulder joint Anatomy 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 5
- 241001653121 Glenoides Species 0.000 description 4
- 210000000852 deltoid muscle Anatomy 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 210000004872 soft tissue Anatomy 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 210000004394 hip joint Anatomy 0.000 description 2
- 210000004095 humeral head Anatomy 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 210000003041 ligament Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000002271 resection Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000011354 acetal resin Substances 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 238000011882 arthroplasty Methods 0.000 description 1
- 210000000544 articulatio talocruralis Anatomy 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 210000002310 elbow joint Anatomy 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 210000002303 tibia Anatomy 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4684—Trial or dummy prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/40—Joints for shoulders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/40—Joints for shoulders
- A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/40—Joints for shoulders
- A61F2/4059—Humeral shafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/30553—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting a position by translation along an axis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
- A61F2002/30616—Sets comprising a plurality of prosthetic parts of different sizes or orientations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30617—Visible markings for adjusting, locating or measuring
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30884—Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0004—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
- A61F2250/0008—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable for adjusting a position by translation along an axis or two perpendicular axes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0097—Visible markings, e.g. indicia
Landscapes
- Health & Medical Sciences (AREA)
- Transplantation (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Physical Education & Sports Medicine (AREA)
- Vascular Medicine (AREA)
- Cardiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
A trial implant component for use in a surgical procedure for replacement of a joint between a long bone and another bone, comprises a metaphyseal part which can be located so that it extends into a cavity at the resected face of the long bone in contact with the internal wall of the cavity in the metaphyseal region, and a disk which has an essentially flat shape and which can be fitted to the metaphyseal part to provide a gauge as to the appropriate size of a head part which is to be selected according to the location of the axis of the bone relative to the edge of the resected bone.
Description
INSTRUMENT FOR USE IN A JOINT REPLACEMENT PROCEDURE
This invention relates to an instrument for use in a procedure for implanting an joint prosthesis in a joint between a long bone and anotlier bone.
It is desirable that the areas of the bearing surfaces of components of a joint prosthesis are maximised in order to minimise localised stresses on the bearing surfaces.
However, a patient's bone structures and the spaces between them can limit the available space for implanted components and can therefore restrict the size of components that can be used.
The humeral component of many shoulder joint prostheses includes a metaphyseal part which extends into the intramedullary cavity, and a head part at the proximal end of the metaphyseal part, facing the glenoid component. It is common for the stem and head parts to be provided as separate modular components, although they might be provided as a single piece. The head part of the humeral component will have a convex bearing surface when the shoulder prosthesis is an anatomic prosthesis, which will articulate against a glenoid component having concave bearing surface. The head part will have a concave bearing surface when the shoulder prosthesis is a reverse prosthesis, which will articulate against a glenoid component having convex bearing surface.
The head part will often be approximately circular when viewed along the axis of the humeral prosthesis at its proximal end. It will be preferred for the transverse dimension of the head part (which will be its diameter when it is circular) to be as big as possible to minimise localised stresses. However, it will generally be preferred for the head part not to overlap the edge of the resected humerus.
The present invention provides a trial implant component which can be used to aid selection of the head part of a joint prosthesis, which includes a flat disk which can be fitted to a metaphyseal part to provide a gauge as to the appropriate size of head part which is to be selected according to the location of the bone axis relative to the edge of the resected bone.
This invention relates to an instrument for use in a procedure for implanting an joint prosthesis in a joint between a long bone and anotlier bone.
It is desirable that the areas of the bearing surfaces of components of a joint prosthesis are maximised in order to minimise localised stresses on the bearing surfaces.
However, a patient's bone structures and the spaces between them can limit the available space for implanted components and can therefore restrict the size of components that can be used.
The humeral component of many shoulder joint prostheses includes a metaphyseal part which extends into the intramedullary cavity, and a head part at the proximal end of the metaphyseal part, facing the glenoid component. It is common for the stem and head parts to be provided as separate modular components, although they might be provided as a single piece. The head part of the humeral component will have a convex bearing surface when the shoulder prosthesis is an anatomic prosthesis, which will articulate against a glenoid component having concave bearing surface. The head part will have a concave bearing surface when the shoulder prosthesis is a reverse prosthesis, which will articulate against a glenoid component having convex bearing surface.
The head part will often be approximately circular when viewed along the axis of the humeral prosthesis at its proximal end. It will be preferred for the transverse dimension of the head part (which will be its diameter when it is circular) to be as big as possible to minimise localised stresses. However, it will generally be preferred for the head part not to overlap the edge of the resected humerus.
The present invention provides a trial implant component which can be used to aid selection of the head part of a joint prosthesis, which includes a flat disk which can be fitted to a metaphyseal part to provide a gauge as to the appropriate size of head part which is to be selected according to the location of the bone axis relative to the edge of the resected bone.
Accordingly, in one aspect, the invention provides a trial implant component for use in a surgical procedure for replacement of a joint between a long bone and another bone, which comprises:
a. a metaphyseal part which can be received in the intramedullary cavity of a long bone, b. a disk which has an essentially flat shape and which can be fitted to the metaphyseal part to provide a gauge as to the appropriate size of a head part which is to be selected according to the location of the axis of the bone relative to the edge of the resected bone.
The use of a disk as a part of a trial implant component has the advantage that the location of the edge of the disk relative to the edge of the resected bone can be inspected more easily than if a trial head part (which might have the shape of part of a sphere when the joint prosthesis is an anatomic prosthesis) is used.
It will generally be preferred that the disk has openings extending through it, through which the resected bone can be inspected. This can assist a surgeon in assessing the size of the disk relative to the size of the bone. For example, the disk can have an outer rim, which might, for example, be approximately circular. Preferably, the rim is approximately planar.
The disk can have a plurality of spokes (with openings between them) which extend inwardly from the rim, for example to a central hub at or close to which they are connected.
The point or points at which spokes are connected to one another can define the hub.
It will generally be preferred for the disk and the metaphyseal part to be provided as modular components which can be assembled together. In this way, different disks can be fitted to a metaphyseal part while the metaphyseal part is implanted within the long bone, to assess the fit of the disks relative to the edge of the bone.
Accordingly, in another aspect, the invention provides a kit which includes a metaphyseal part and at least two of the disks, in which the configuration of one of the disks is different from the configuration of the other disk. For example, the disks might differ in terms of size. They might differ in terms of the location of a fixing feature (for example a spigot or a socket) relative to the edge of the disk (different eccentricities).
The metaphyseal part of the trial component of the invention can also be used with a trial head part, with a surface which corresponds to the bearing surface of the corresponding component of the implanted prosthesis component. Generally, the trial head part will be fitted to the metaphyseal part in a step which is performed after the disk has been used. It will generally be the case that the previous use of one or more disks in the selection of a trial head part will help to ensure that the head part is of an appropriate size, or at least close to the appropriate size, for the intended application. The bearing surface of the trial head part will generally be rounded. It can be convex when the trial implant component is a stem component of an anatomic joint prosthesis. It can be concave when the trial implant component is a stem component of a reversed joint.
The metaphyseal part of the trial implant component of the invention can have a superior plate which can sit on the resected long bone on the resection plane thereof.
The plate might extend around the entire periphery of the metaphyseal part. However, it can frequently be appropriate for the plate to extend around less than all of the periphery of the metaphyseal part. For example, the plate might be provided at two or more spaced apart locations on the periphery of the metaphyseal part.
Preferably, the ratio of the length of the metaphyseal part measured between the superior and inferior faces along the assembly axis to its width at the superior face measured generally along the medial-lateral axis is not more than about 1.0, more preferably not more than about 0.7, especially not more than about 0.5.
Preferably, the metaphyseal part has a part of a spigot and socket assembly for engaging a mating component which has the corresponding part of the said assembly, the spigot and socket assembly defining an assembly axis, in which the length of the metaphyseal part measured along the assembly axis is not more than about 5 cm, more preferably not more than about 3 cm, especially not more than about 2 cm.
a. a metaphyseal part which can be received in the intramedullary cavity of a long bone, b. a disk which has an essentially flat shape and which can be fitted to the metaphyseal part to provide a gauge as to the appropriate size of a head part which is to be selected according to the location of the axis of the bone relative to the edge of the resected bone.
The use of a disk as a part of a trial implant component has the advantage that the location of the edge of the disk relative to the edge of the resected bone can be inspected more easily than if a trial head part (which might have the shape of part of a sphere when the joint prosthesis is an anatomic prosthesis) is used.
It will generally be preferred that the disk has openings extending through it, through which the resected bone can be inspected. This can assist a surgeon in assessing the size of the disk relative to the size of the bone. For example, the disk can have an outer rim, which might, for example, be approximately circular. Preferably, the rim is approximately planar.
The disk can have a plurality of spokes (with openings between them) which extend inwardly from the rim, for example to a central hub at or close to which they are connected.
The point or points at which spokes are connected to one another can define the hub.
It will generally be preferred for the disk and the metaphyseal part to be provided as modular components which can be assembled together. In this way, different disks can be fitted to a metaphyseal part while the metaphyseal part is implanted within the long bone, to assess the fit of the disks relative to the edge of the bone.
Accordingly, in another aspect, the invention provides a kit which includes a metaphyseal part and at least two of the disks, in which the configuration of one of the disks is different from the configuration of the other disk. For example, the disks might differ in terms of size. They might differ in terms of the location of a fixing feature (for example a spigot or a socket) relative to the edge of the disk (different eccentricities).
The metaphyseal part of the trial component of the invention can also be used with a trial head part, with a surface which corresponds to the bearing surface of the corresponding component of the implanted prosthesis component. Generally, the trial head part will be fitted to the metaphyseal part in a step which is performed after the disk has been used. It will generally be the case that the previous use of one or more disks in the selection of a trial head part will help to ensure that the head part is of an appropriate size, or at least close to the appropriate size, for the intended application. The bearing surface of the trial head part will generally be rounded. It can be convex when the trial implant component is a stem component of an anatomic joint prosthesis. It can be concave when the trial implant component is a stem component of a reversed joint.
The metaphyseal part of the trial implant component of the invention can have a superior plate which can sit on the resected long bone on the resection plane thereof.
The plate might extend around the entire periphery of the metaphyseal part. However, it can frequently be appropriate for the plate to extend around less than all of the periphery of the metaphyseal part. For example, the plate might be provided at two or more spaced apart locations on the periphery of the metaphyseal part.
Preferably, the ratio of the length of the metaphyseal part measured between the superior and inferior faces along the assembly axis to its width at the superior face measured generally along the medial-lateral axis is not more than about 1.0, more preferably not more than about 0.7, especially not more than about 0.5.
Preferably, the metaphyseal part has a part of a spigot and socket assembly for engaging a mating component which has the corresponding part of the said assembly, the spigot and socket assembly defining an assembly axis, in which the length of the metaphyseal part measured along the assembly axis is not more than about 5 cm, more preferably not more than about 3 cm, especially not more than about 2 cm.
Preferably, the length of the metaphyseal part measured from the superior face to the inferior face parallel to the assembly axis is greater at the lateral edge than at the medial edge. For example, the ratio of the length of the metaphyseal part measured from the superior face to the inferior face parallel to the assembly axis at the lateral edge to the length at the medial edge is at least about 1.1, preferably at least about 1.25, for example at least about 1.4.
The use of a metaphyseal part in the trial implant componeiit of the invention with features such as those mentioned above has the advantage that it can facilitate carrying out the joint replacement procedure through a small incision.
Preferably, one of the disk and the metaphyseal part carries a spigot and the other has a socket formed in it in which the spigot can be received. When the disk comprises spokes which are connected to one another at a hub, the spigot or the socket can be provided at the hub. It will generally be preferred for the spigot to be provided on the disk and for the socket to be formed in the metaphyseal part. The spigot and the socket should be configured so that the spigot is a snug fit in the socket. Frequently, the spigot and socket will have a tapered shape.
The spigot or socket (as the case might be) which is provided on the disk can be located centrally on the disk. However, it can often be preferred that the spigot or socket to be located eccentrically on the disk. In this way, the disk can be used in the selection of a head component which has a component of a spigot and socket assembly which is located off-centre, for example, for a situation where a surgeon is able to choose between head conlponents with a range of eccentricities. The disk can also be used to determine the appropriate angular offset of a head component relative to the axis of the patient's bone, for example by being provided with markings on its rim which indicate the optimum angular offset.
The disk is made from polymeric material, selected from polyolefins, polyesters, poly-amides, polycarbonates and the like. The polymeric material can be reinforced by fibres.
An advantage of using a polymeric material for the disk is that it can easily be made by a moulding process. Polymeric materials can also be relatively light weight. The use of polymeric materials gives a possible further advantage that disks of different sizes can be made easily witli different colours for ease of identification and effective colour coding.
Metallic materials might also be used for the disk. Examples include such materials which are commonly used in the manufacture of surgical instruments, especially certain stainless steels.
Generally, the metaphyseal part will be formed from a metallic material.
Preferred examples might include materials of the kind which are commonly used in the manufacture of surgical instruments, especially certain stainless steels.
The trial component of the present invention can be used as an aid to selection of components of joint prostheses for implantation in surgical procedures for replacement of joints which include the ankle joint, the knee joint, the hip joint, the elbow joint and the shoulder joint. It is particularly suitable for use in preparation of the femur to receive the femoral component of a hip joint prosthesis, and in preparation of the humerus to receive the humeral component of a shoulder joint prosthesis. The shape of the disk will depend on the intended application for the trial component. Its shape might be selected according to the shape of the surface of the part of the ultimate implant which faces towards the resected surface of the patient's bone. Its shape might be selected according to the shape of the resected surface of the patient's bone. A generally circular disk will be suitable for use in many shoulder joint applications. When the trial component is used as an aid to selection of the tibial component of a knee joint prosthesis, its shape might correspond to the shape of a resected tibia with a generally oval outline with the major axis running medial-lateral, having a notch in the posterior face.
The intended location of the metaphyseal part of the trial implant component can be determined as a result of pre-operative planning steps, in which the shape and size of the bone into which it is to be implanted are assessed by appropriate imaging techniques.
Components of the trial implant component of the invention, including in particular the metaphyseal part or the disk or both and a trial head component if included, can be provided with features which enable its location (including orientation) to be tracked remotely, for example using opto-electronic or magnetic tracking apparatus.
Such apparatus, and components which can be included in surgical instruments such as the trial implant component of the present invention are known. This can enable, for example, the height of the metaphyseal part relative to the resected surface of the humerus to be monitored. It can also enable the angular orientation of a disk which is not circular, or which is circular but witli an eccentrically mounted fixing feature, to be monitored.
When the component of the invention is used in a procedure to replace a shoulder joint, the procedure can be performed through a supero-lateral incision. This technique avoids the need to release the subscapularis. It can therefore eliminate the risk of post-operative rupture of the subscapularis which can be associated with the known anterior approach through deltopectoral tissue. The use of the component in a procedure using a lateral approach is attractive because of the visibility of the resected surface of the humerus that is available through such an incision.
A further advantage of a shoulder joint procedure which is performed through a supero-lateral incision is that easier access to the glenoid is available compared with the known anterior approach through deltopectoral tissue, even when the size of the supero-lateral incision is small, and even taking account of surrounding soft tissue structures which might obstruct access to the joint space.
Preferably, the face of the metaphyseal part at its inferior end is approximately planar. It might be slightly rounded, especially at its peripheral edges.
Preferably, the ratio of the surface area of the metaphyseal part (excluding the ends of any ribs) at its superior face to the surface area at its inferior face is not more than about 3.0, more preferably not more than about 2Ø Preferably, the said ratio is at least about 1.3, more preferably at least about 1.5, for example at least about 1.75. When the superior face or the inferior face or either of them is not planar, the area that is measured is the projection of the face as defined by its peripheral edge. When the superior face has a socket formed in it, or a spigot extending from it, the area is again taken as the projection of the face as defined by its peripheral edge.
Preferably, the angle between the plane defined by the peripheral edge of the superior face of the metaphyseal part and the plane defined by the peripheral edge of its inferior face is at least about 5 , more preferably at least about 10 , for example at least about 15 . Prefer-ably, the angle between the said planes is not more than about 50 , more preferably not more than about 35 , especially not more than about 30 .
Preferably, the metaphyseal part has a plurality of ribs extending along it which can be received in corresponding grooves in the internal wall of the long bone, to locate the metaphyseal part rotationally in the cavity.
Preferably, the trial implant component includes at least one rib on its side wall, preferably extending generally along the axis of the bone in which the trial implant component is to be used. The size and location of a groove which is formed in the internal wall of the bone can be arranged so that it can receive the or each corresponding rib on the joint prosthesis component which is to be implanted in the patient's bone. Ribs on the trial implant component correspond in size and position to ribs on the joint prosthesis component. On the joint prosthesis component, the ribs can be provided with openings extending through them which can receive sutures. The holes can then be used to anchor soft tissue to the prosthesis component.
The long bone can be prepared to receive the trial implant component of the invention a surgical procedure which includes the steps of:
= maleing an incision, = locating a plane on which to resect the long bone to remove the head, = performing a resection to remove the head of the bone, = preparing the cavity within the resected bone to receive the stem part of the trial implant component, and subsequently the implant component of the joint prosthesis, 0 implanting the stem part of the trial implant component, = fitting a disk to the stem part of the trial implant component to assess the proximity of the edge of a component of a final implant prosthesis to the edge of the resected bone, and = replacing the disk with another disk which has a different configuration (for example size or eccentricity).
More particularly, it is preferred that the procedure includes the steps of:
= using a trial disk to determine the relevant widtll of the resected bone so that an implant with an appropriate transverse size (which will be a diameter when the implant is circular) is selected, = using a cutting guide to determine the height of the resected head of the bone so that an implant with the appropriate height is selected, and = using a trial head component to assess soft tissue balance during articulation of the joint.
The surgical procedure will generally include a step of assembling the head and stem parts of a joint prosthesis component, after the appropriate head part has been selected. The head and stem parts can be fitted together using appropriately matching spigot and stem features, especially with matched tapering surfaces, as is well known. Care should be taken to match the eccentricity which is identified when using the trial disk in the eccentric arrangement of the head and stem parts of the component. This can be achieved conveniently using marks on the trial disk as points of reference.
The cavity within the long bone can be prepared using appropriate tools. Such tools might include drills, reamers, broaches and rasps, as is generally known.
In another aspect, the invention provides a method for a superolateral approach minimally invasive shoulder arthroplasty surgical procedure. The procedure can comprise some or all of the following: making an incision in the deltoid muscle along the direction of the deltoid fibres; splitting the deltoid muscle along its fibres; removing the glenohumeral ligaments and the coracoacromial ligament and releasing the biceps tendon; resecting the humeral head using a cutting guide; using a broach tool to provide a cavity within the humerus;
The use of a metaphyseal part in the trial implant componeiit of the invention with features such as those mentioned above has the advantage that it can facilitate carrying out the joint replacement procedure through a small incision.
Preferably, one of the disk and the metaphyseal part carries a spigot and the other has a socket formed in it in which the spigot can be received. When the disk comprises spokes which are connected to one another at a hub, the spigot or the socket can be provided at the hub. It will generally be preferred for the spigot to be provided on the disk and for the socket to be formed in the metaphyseal part. The spigot and the socket should be configured so that the spigot is a snug fit in the socket. Frequently, the spigot and socket will have a tapered shape.
The spigot or socket (as the case might be) which is provided on the disk can be located centrally on the disk. However, it can often be preferred that the spigot or socket to be located eccentrically on the disk. In this way, the disk can be used in the selection of a head component which has a component of a spigot and socket assembly which is located off-centre, for example, for a situation where a surgeon is able to choose between head conlponents with a range of eccentricities. The disk can also be used to determine the appropriate angular offset of a head component relative to the axis of the patient's bone, for example by being provided with markings on its rim which indicate the optimum angular offset.
The disk is made from polymeric material, selected from polyolefins, polyesters, poly-amides, polycarbonates and the like. The polymeric material can be reinforced by fibres.
An advantage of using a polymeric material for the disk is that it can easily be made by a moulding process. Polymeric materials can also be relatively light weight. The use of polymeric materials gives a possible further advantage that disks of different sizes can be made easily witli different colours for ease of identification and effective colour coding.
Metallic materials might also be used for the disk. Examples include such materials which are commonly used in the manufacture of surgical instruments, especially certain stainless steels.
Generally, the metaphyseal part will be formed from a metallic material.
Preferred examples might include materials of the kind which are commonly used in the manufacture of surgical instruments, especially certain stainless steels.
The trial component of the present invention can be used as an aid to selection of components of joint prostheses for implantation in surgical procedures for replacement of joints which include the ankle joint, the knee joint, the hip joint, the elbow joint and the shoulder joint. It is particularly suitable for use in preparation of the femur to receive the femoral component of a hip joint prosthesis, and in preparation of the humerus to receive the humeral component of a shoulder joint prosthesis. The shape of the disk will depend on the intended application for the trial component. Its shape might be selected according to the shape of the surface of the part of the ultimate implant which faces towards the resected surface of the patient's bone. Its shape might be selected according to the shape of the resected surface of the patient's bone. A generally circular disk will be suitable for use in many shoulder joint applications. When the trial component is used as an aid to selection of the tibial component of a knee joint prosthesis, its shape might correspond to the shape of a resected tibia with a generally oval outline with the major axis running medial-lateral, having a notch in the posterior face.
The intended location of the metaphyseal part of the trial implant component can be determined as a result of pre-operative planning steps, in which the shape and size of the bone into which it is to be implanted are assessed by appropriate imaging techniques.
Components of the trial implant component of the invention, including in particular the metaphyseal part or the disk or both and a trial head component if included, can be provided with features which enable its location (including orientation) to be tracked remotely, for example using opto-electronic or magnetic tracking apparatus.
Such apparatus, and components which can be included in surgical instruments such as the trial implant component of the present invention are known. This can enable, for example, the height of the metaphyseal part relative to the resected surface of the humerus to be monitored. It can also enable the angular orientation of a disk which is not circular, or which is circular but witli an eccentrically mounted fixing feature, to be monitored.
When the component of the invention is used in a procedure to replace a shoulder joint, the procedure can be performed through a supero-lateral incision. This technique avoids the need to release the subscapularis. It can therefore eliminate the risk of post-operative rupture of the subscapularis which can be associated with the known anterior approach through deltopectoral tissue. The use of the component in a procedure using a lateral approach is attractive because of the visibility of the resected surface of the humerus that is available through such an incision.
A further advantage of a shoulder joint procedure which is performed through a supero-lateral incision is that easier access to the glenoid is available compared with the known anterior approach through deltopectoral tissue, even when the size of the supero-lateral incision is small, and even taking account of surrounding soft tissue structures which might obstruct access to the joint space.
Preferably, the face of the metaphyseal part at its inferior end is approximately planar. It might be slightly rounded, especially at its peripheral edges.
Preferably, the ratio of the surface area of the metaphyseal part (excluding the ends of any ribs) at its superior face to the surface area at its inferior face is not more than about 3.0, more preferably not more than about 2Ø Preferably, the said ratio is at least about 1.3, more preferably at least about 1.5, for example at least about 1.75. When the superior face or the inferior face or either of them is not planar, the area that is measured is the projection of the face as defined by its peripheral edge. When the superior face has a socket formed in it, or a spigot extending from it, the area is again taken as the projection of the face as defined by its peripheral edge.
Preferably, the angle between the plane defined by the peripheral edge of the superior face of the metaphyseal part and the plane defined by the peripheral edge of its inferior face is at least about 5 , more preferably at least about 10 , for example at least about 15 . Prefer-ably, the angle between the said planes is not more than about 50 , more preferably not more than about 35 , especially not more than about 30 .
Preferably, the metaphyseal part has a plurality of ribs extending along it which can be received in corresponding grooves in the internal wall of the long bone, to locate the metaphyseal part rotationally in the cavity.
Preferably, the trial implant component includes at least one rib on its side wall, preferably extending generally along the axis of the bone in which the trial implant component is to be used. The size and location of a groove which is formed in the internal wall of the bone can be arranged so that it can receive the or each corresponding rib on the joint prosthesis component which is to be implanted in the patient's bone. Ribs on the trial implant component correspond in size and position to ribs on the joint prosthesis component. On the joint prosthesis component, the ribs can be provided with openings extending through them which can receive sutures. The holes can then be used to anchor soft tissue to the prosthesis component.
The long bone can be prepared to receive the trial implant component of the invention a surgical procedure which includes the steps of:
= maleing an incision, = locating a plane on which to resect the long bone to remove the head, = performing a resection to remove the head of the bone, = preparing the cavity within the resected bone to receive the stem part of the trial implant component, and subsequently the implant component of the joint prosthesis, 0 implanting the stem part of the trial implant component, = fitting a disk to the stem part of the trial implant component to assess the proximity of the edge of a component of a final implant prosthesis to the edge of the resected bone, and = replacing the disk with another disk which has a different configuration (for example size or eccentricity).
More particularly, it is preferred that the procedure includes the steps of:
= using a trial disk to determine the relevant widtll of the resected bone so that an implant with an appropriate transverse size (which will be a diameter when the implant is circular) is selected, = using a cutting guide to determine the height of the resected head of the bone so that an implant with the appropriate height is selected, and = using a trial head component to assess soft tissue balance during articulation of the joint.
The surgical procedure will generally include a step of assembling the head and stem parts of a joint prosthesis component, after the appropriate head part has been selected. The head and stem parts can be fitted together using appropriately matching spigot and stem features, especially with matched tapering surfaces, as is well known. Care should be taken to match the eccentricity which is identified when using the trial disk in the eccentric arrangement of the head and stem parts of the component. This can be achieved conveniently using marks on the trial disk as points of reference.
The cavity within the long bone can be prepared using appropriate tools. Such tools might include drills, reamers, broaches and rasps, as is generally known.
In another aspect, the invention provides a method for a superolateral approach minimally invasive shoulder arthroplasty surgical procedure. The procedure can comprise some or all of the following: making an incision in the deltoid muscle along the direction of the deltoid fibres; splitting the deltoid muscle along its fibres; removing the glenohumeral ligaments and the coracoacromial ligament and releasing the biceps tendon; resecting the humeral head using a cutting guide; using a broach tool to provide a cavity within the humerus;
using a trial stem inserted in the cavity to determine the size of a stein implant; using a trial head to determine the size of a head implant by engaging the trial head with a trial stem in the humerus; and implanting a stem implant and head implant having the determined sizes, and any combination thereof.
The incision is made in the direction along the deltoid fibres. Preferably, the incision is made substantially vertically. Preferably, the deltoid is split in the direction of the fibres and tllerefore the deltoid is not damaged during this procedure. After making an incision through the deltoid muscle a further incision is made through the cuff muscle.
Preferably, the incision through the cuff muscle is made between the supraspinatus and the sub-scapularis. The present invention therefore has the advantage that the cuff muscles, in particular the subscapularis are not damaged during the procedure. The recovery time of the patient undergoing the surgical method of the present invention compared to the recovery time of a patient undergoing conventional methods can be significantly reduced.
Anatomic terms (such as superior, inferior, medial and lateral) are used in this document to refer to parts of the trial implant component of the invention, to distinguish different parts of the trial implant component from one another. The terms are applicable in the strict anatomic sense to parts of a trial implant component which is intended for use in shoulder replacement surgery. The terms can still be used to distinguish parts of a trial implant component from one another when they are not applicable anatomically, and in this case, the trial implant component should be envisaged with an appropriate rotational translation to relate it to a patient's anatomy.
Embodiments of the invention will now be described by way of example with reference to the accompanying drawings, in which:
Figure 1 is an isometric view of a conventional trial stem such as might have been used prior to the present invention in shoulder joint replacement surgery.
Figure 2 is an isometric view of a trial implant component according to the present invention.
The incision is made in the direction along the deltoid fibres. Preferably, the incision is made substantially vertically. Preferably, the deltoid is split in the direction of the fibres and tllerefore the deltoid is not damaged during this procedure. After making an incision through the deltoid muscle a further incision is made through the cuff muscle.
Preferably, the incision through the cuff muscle is made between the supraspinatus and the sub-scapularis. The present invention therefore has the advantage that the cuff muscles, in particular the subscapularis are not damaged during the procedure. The recovery time of the patient undergoing the surgical method of the present invention compared to the recovery time of a patient undergoing conventional methods can be significantly reduced.
Anatomic terms (such as superior, inferior, medial and lateral) are used in this document to refer to parts of the trial implant component of the invention, to distinguish different parts of the trial implant component from one another. The terms are applicable in the strict anatomic sense to parts of a trial implant component which is intended for use in shoulder replacement surgery. The terms can still be used to distinguish parts of a trial implant component from one another when they are not applicable anatomically, and in this case, the trial implant component should be envisaged with an appropriate rotational translation to relate it to a patient's anatomy.
Embodiments of the invention will now be described by way of example with reference to the accompanying drawings, in which:
Figure 1 is an isometric view of a conventional trial stem such as might have been used prior to the present invention in shoulder joint replacement surgery.
Figure 2 is an isometric view of a trial implant component according to the present invention.
Figure 3 is an isometric view of a trial disk.
Figure 4 is an isometric view of the trial implant component, with a trial disk, in place in the cavity within a resected humerus.
Referring to the drawings, Figure 1 shows a conventional trial stem 10 which includes a distal stem part 12 and a proximal metaphyseal part 14. A plate 13 is provided on the superior face of the metaphyseal part extending from the medial and lateral edges thereof..
An aperture 16 is provided in the superior face of the stem which can mate in use with a spigot on a trial head. The trial stem can be made of a polymeric material, such as an acetal resin.
The stem 10 is designed so that its shape closely corresponds to that of the implant component which ultimately is intended for implantation in a cavity within a patient's humerus, in particular in relation to its overall dimensions, both along the axis of the bone and in the plane which is perpendicular to that axis.
The trial stem which is shown in Figure 1 has the disadvantage that it can be difficult to insert it into the intramedullary cavity in a bone through a small incision.
Figure 2 shows a trial implant component 30 according to the invention. The trial implant component shown in Figure 2 can be provided as part of a kit of components having differing sizes, as in the set shown in Figure 1. The trial implant component 30 has a metaphyseal part 32 which can be located in a cavity at the resected face of a humerus or other long bone in contact with the internal wall of the cavity in the metaphyseal region.
The metaphyseal part has a superior face 34 and an inferior face 36. A medial rib 38 is provided on the medially facing side of the metaphyseal part. A lateral rib 40 is provided on the laterally facing side of the metaphyseal part. First and second additional ribs 42 are provided on the laterally facing side of the metaphyseal part, one on each side of the lateral rib 40. The metaphyseal part has a plate 43 on its superior face which protrudes anteriorly and posteriorly beyond the portions of the metaphyseal part which extend into the bone cavity.
Figure 4 is an isometric view of the trial implant component, with a trial disk, in place in the cavity within a resected humerus.
Referring to the drawings, Figure 1 shows a conventional trial stem 10 which includes a distal stem part 12 and a proximal metaphyseal part 14. A plate 13 is provided on the superior face of the metaphyseal part extending from the medial and lateral edges thereof..
An aperture 16 is provided in the superior face of the stem which can mate in use with a spigot on a trial head. The trial stem can be made of a polymeric material, such as an acetal resin.
The stem 10 is designed so that its shape closely corresponds to that of the implant component which ultimately is intended for implantation in a cavity within a patient's humerus, in particular in relation to its overall dimensions, both along the axis of the bone and in the plane which is perpendicular to that axis.
The trial stem which is shown in Figure 1 has the disadvantage that it can be difficult to insert it into the intramedullary cavity in a bone through a small incision.
Figure 2 shows a trial implant component 30 according to the invention. The trial implant component shown in Figure 2 can be provided as part of a kit of components having differing sizes, as in the set shown in Figure 1. The trial implant component 30 has a metaphyseal part 32 which can be located in a cavity at the resected face of a humerus or other long bone in contact with the internal wall of the cavity in the metaphyseal region.
The metaphyseal part has a superior face 34 and an inferior face 36. A medial rib 38 is provided on the medially facing side of the metaphyseal part. A lateral rib 40 is provided on the laterally facing side of the metaphyseal part. First and second additional ribs 42 are provided on the laterally facing side of the metaphyseal part, one on each side of the lateral rib 40. The metaphyseal part has a plate 43 on its superior face which protrudes anteriorly and posteriorly beyond the portions of the metaphyseal part which extend into the bone cavity.
A tapering socket 44 is provided in the superior face of the metaphyseal part.
The axis of the socket is perpendicular to the superior face.
The inferior face 36 of the metaphyseal part is planar and approximately parallel to the superior face.
The length of the metaphyseal part measured between the superior and inferior faces along the axis of the socket 44 is about 17 mm.
The widtli of the metaphyseal part at the superior face measured generally along the medial-lateral axis (ilot including any fin which extends from the superior face) is about 25 mm.
The ratio of the length of the metaphyseal part measured between the superior and inferior faces along the assembly axis to its width at the superior face measured generally along the medial-lateral axis is about 0.68.
The ratio of the surface area of the metaphyseal part at its superior face to the area at its inferior face is at least about 1.5, preferably at least about 1.75, for example about 2Ø
Figure 3 shows a set of trial disks which might be provided in a kit for use in a surgical procedure. The disks are provided in two subsets A, B. The disks in subset A
have a hub which is located centrally relative to a rim. The disks in subset B have a hub which is located eccentrically relative to a rim. The disks within each subset differ from one another in size, so that the external diameters of the rim vary between 36 mm and 52 mm. The hub of each disk in subset B is offset from the centre of the rim by a distance of 4 mm.
Each trial disk 50 in the two subsets might be used with the trial implant component shown in Figure 2. Each disk has a circular outer rim 52 which is generally planar.
It includes a spigot 54 which is tapered along its length so that it is a snug fit in the socket 44 in the metaphyseal part. The spigot is connected to the rim by means of spokes 56.
The spigot can be located centrally relative to the rim. The spigot can be located eccentrically relative to the rim.
A trial disk should be selected whose size is such that the rim of the disk does not overlap the edge of the resected bone. The size of the disk should preferably be such that the rim of the disk extends close to the edge of the bone.
Figure 4 shows an assembly of the metaphyseal part and the trial disk, with the meta-physeal part extendiiig into in a cavity at the resected face of a humerus.
The metaphyseal part of the assembly contacts the internal wall of the cavity in the metaphyseal region but does not extend further along the intramedullary cavity of the bone.
The disk is used to provide an indication of the radial extent of a humeral head which might be used with an implant component which is to be fitted into the cavity in the humerus. It is generally desirable to use a head wliich is as large as possible, consistent with the edge of the head not extending beyond the edge of the resected humerus.
Different heads can be provided with different transverse dimensions, and different offsets between the spigot which is received in a socket in the stem component and the central axis of the head. The openings in the disk that are defined by the rim and the spokes allow the fit of the disk relative to the resected humerus to be assessed.
The axis of the socket is perpendicular to the superior face.
The inferior face 36 of the metaphyseal part is planar and approximately parallel to the superior face.
The length of the metaphyseal part measured between the superior and inferior faces along the axis of the socket 44 is about 17 mm.
The widtli of the metaphyseal part at the superior face measured generally along the medial-lateral axis (ilot including any fin which extends from the superior face) is about 25 mm.
The ratio of the length of the metaphyseal part measured between the superior and inferior faces along the assembly axis to its width at the superior face measured generally along the medial-lateral axis is about 0.68.
The ratio of the surface area of the metaphyseal part at its superior face to the area at its inferior face is at least about 1.5, preferably at least about 1.75, for example about 2Ø
Figure 3 shows a set of trial disks which might be provided in a kit for use in a surgical procedure. The disks are provided in two subsets A, B. The disks in subset A
have a hub which is located centrally relative to a rim. The disks in subset B have a hub which is located eccentrically relative to a rim. The disks within each subset differ from one another in size, so that the external diameters of the rim vary between 36 mm and 52 mm. The hub of each disk in subset B is offset from the centre of the rim by a distance of 4 mm.
Each trial disk 50 in the two subsets might be used with the trial implant component shown in Figure 2. Each disk has a circular outer rim 52 which is generally planar.
It includes a spigot 54 which is tapered along its length so that it is a snug fit in the socket 44 in the metaphyseal part. The spigot is connected to the rim by means of spokes 56.
The spigot can be located centrally relative to the rim. The spigot can be located eccentrically relative to the rim.
A trial disk should be selected whose size is such that the rim of the disk does not overlap the edge of the resected bone. The size of the disk should preferably be such that the rim of the disk extends close to the edge of the bone.
Figure 4 shows an assembly of the metaphyseal part and the trial disk, with the meta-physeal part extendiiig into in a cavity at the resected face of a humerus.
The metaphyseal part of the assembly contacts the internal wall of the cavity in the metaphyseal region but does not extend further along the intramedullary cavity of the bone.
The disk is used to provide an indication of the radial extent of a humeral head which might be used with an implant component which is to be fitted into the cavity in the humerus. It is generally desirable to use a head wliich is as large as possible, consistent with the edge of the head not extending beyond the edge of the resected humerus.
Different heads can be provided with different transverse dimensions, and different offsets between the spigot which is received in a socket in the stem component and the central axis of the head. The openings in the disk that are defined by the rim and the spokes allow the fit of the disk relative to the resected humerus to be assessed.
Claims (8)
1. A trial implant component for use in a surgical procedure for replacement of a joint between a long bone and another bone, which comprises:
a. a metaphyseal part which can be located so that it extends into a cavity at the resected face of the long bone in contact with the internal wall of the cavity in the metaphyseal region, b. a disk which has an essentially flat shape and which can be fitted to the metaphyseal part when the metaphyseal part is located in the cavity in the long bone to provide a gauge as to the appropriate size of a head part which is to be selected according to the location of the axis of the bone relative to the edge of the resected bone, in which the disk has openings extending through it through which the resected bone can be inspected.
a. a metaphyseal part which can be located so that it extends into a cavity at the resected face of the long bone in contact with the internal wall of the cavity in the metaphyseal region, b. a disk which has an essentially flat shape and which can be fitted to the metaphyseal part when the metaphyseal part is located in the cavity in the long bone to provide a gauge as to the appropriate size of a head part which is to be selected according to the location of the axis of the bone relative to the edge of the resected bone, in which the disk has openings extending through it through which the resected bone can be inspected.
2. A trial implant component as claimed in claim 1, in which the disk and the metaphyseal part are provided as modular components which can be assembled together.
3. A trial implant component as claimed in claim 1, in which one of the disk and the metaphyseal part carries a spigot and the other has a socket formed in it in which the spigot can be received.
4. A trial implant component as claimed in claim 3, in which the spigot or socket which is provided on the disk is located eccentrically relative to the centre of the disk.
5. A trial implant component as claimed in claim 1, in which the disk comprises an outer rim, with a plurality of spokes extending inwardly from the rim.
6. A trial implant component as claimed in claim 1, in which the disk is approximately circular.
7. A kit for use in a procedure for replacement of the head of a long bone in a joint replacement procedure, which comprises a trial implant as claimed in any one of claims 1 to 6.
8. A kit as claimed in claim 7 further comprising a prosthesis which is to be implanted in the patient, in which the prosthesis comprises a head component having an external surface in the form of part of a sphere which is truncated on a head component plane.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0511292A GB0511292D0 (en) | 2005-06-03 | 2005-06-03 | Method and instruments for shoulder arthroplasy |
GB0511292.5 | 2005-06-03 | ||
GB0603470A GB0603470D0 (en) | 2006-02-22 | 2006-02-22 | Instrument for use in a joint replacement procedure |
GB0603470.6 | 2006-02-22 | ||
PCT/IB2006/002187 WO2006136954A1 (en) | 2005-06-03 | 2006-06-02 | Instrument for use in a joint replacement procedure |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2610672A1 CA2610672A1 (en) | 2006-12-28 |
CA2610672C true CA2610672C (en) | 2013-09-17 |
Family
ID=37024988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2610672A Expired - Fee Related CA2610672C (en) | 2005-06-03 | 2006-06-02 | Instrument for use in a joint replacement procedure |
Country Status (6)
Country | Link |
---|---|
US (1) | US8231682B2 (en) |
EP (1) | EP1885295B1 (en) |
JP (1) | JP4864966B2 (en) |
AU (1) | AU2006260591B2 (en) |
CA (1) | CA2610672C (en) |
WO (1) | WO2006136954A1 (en) |
Families Citing this family (108)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8778028B2 (en) | 2005-02-25 | 2014-07-15 | Shoulder Innovations, Inc. | Methods and devices for less invasive glenoid replacement |
US20230080207A1 (en) | 2005-02-25 | 2023-03-16 | Shoulder Innovations, Inc. | Methods and devices for less invasive glenoid replacement |
US8864769B2 (en) | 2006-02-27 | 2014-10-21 | Biomet Manufacturing, Llc | Alignment guides with patient-specific anchoring elements |
US9113971B2 (en) | 2006-02-27 | 2015-08-25 | Biomet Manufacturing, Llc | Femoral acetabular impingement guide |
US8473305B2 (en) | 2007-04-17 | 2013-06-25 | Biomet Manufacturing Corp. | Method and apparatus for manufacturing an implant |
US8070752B2 (en) | 2006-02-27 | 2011-12-06 | Biomet Manufacturing Corp. | Patient specific alignment guide and inter-operative adjustment |
US8298237B2 (en) | 2006-06-09 | 2012-10-30 | Biomet Manufacturing Corp. | Patient-specific alignment guide for multiple incisions |
US7967868B2 (en) | 2007-04-17 | 2011-06-28 | Biomet Manufacturing Corp. | Patient-modified implant and associated method |
US8282646B2 (en) * | 2006-02-27 | 2012-10-09 | Biomet Manufacturing Corp. | Patient specific knee alignment guide and associated method |
US8133234B2 (en) | 2006-02-27 | 2012-03-13 | Biomet Manufacturing Corp. | Patient specific acetabular guide and method |
US9173661B2 (en) | 2006-02-27 | 2015-11-03 | Biomet Manufacturing, Llc | Patient specific alignment guide with cutting surface and laser indicator |
US9345548B2 (en) | 2006-02-27 | 2016-05-24 | Biomet Manufacturing, Llc | Patient-specific pre-operative planning |
US8241293B2 (en) | 2006-02-27 | 2012-08-14 | Biomet Manufacturing Corp. | Patient specific high tibia osteotomy |
US20150335438A1 (en) | 2006-02-27 | 2015-11-26 | Biomet Manufacturing, Llc. | Patient-specific augments |
US8535387B2 (en) | 2006-02-27 | 2013-09-17 | Biomet Manufacturing, Llc | Patient-specific tools and implants |
US9289253B2 (en) | 2006-02-27 | 2016-03-22 | Biomet Manufacturing, Llc | Patient-specific shoulder guide |
US9907659B2 (en) | 2007-04-17 | 2018-03-06 | Biomet Manufacturing, Llc | Method and apparatus for manufacturing an implant |
US9339278B2 (en) | 2006-02-27 | 2016-05-17 | Biomet Manufacturing, Llc | Patient-specific acetabular guides and associated instruments |
US8568487B2 (en) | 2006-02-27 | 2013-10-29 | Biomet Manufacturing, Llc | Patient-specific hip joint devices |
US9918740B2 (en) | 2006-02-27 | 2018-03-20 | Biomet Manufacturing, Llc | Backup surgical instrument system and method |
US8092465B2 (en) | 2006-06-09 | 2012-01-10 | Biomet Manufacturing Corp. | Patient specific knee alignment guide and associated method |
US8377066B2 (en) | 2006-02-27 | 2013-02-19 | Biomet Manufacturing Corp. | Patient-specific elbow guides and associated methods |
US8603180B2 (en) | 2006-02-27 | 2013-12-10 | Biomet Manufacturing, Llc | Patient-specific acetabular alignment guides |
US8858561B2 (en) | 2006-06-09 | 2014-10-14 | Blomet Manufacturing, LLC | Patient-specific alignment guide |
US8407067B2 (en) | 2007-04-17 | 2013-03-26 | Biomet Manufacturing Corp. | Method and apparatus for manufacturing an implant |
US10278711B2 (en) | 2006-02-27 | 2019-05-07 | Biomet Manufacturing, Llc | Patient-specific femoral guide |
US8591516B2 (en) | 2006-02-27 | 2013-11-26 | Biomet Manufacturing, Llc | Patient-specific orthopedic instruments |
US8608749B2 (en) | 2006-02-27 | 2013-12-17 | Biomet Manufacturing, Llc | Patient-specific acetabular guides and associated instruments |
US8608748B2 (en) | 2006-02-27 | 2013-12-17 | Biomet Manufacturing, Llc | Patient specific guides |
US9795399B2 (en) | 2006-06-09 | 2017-10-24 | Biomet Manufacturing, Llc | Patient-specific knee alignment guide and associated method |
US20090287309A1 (en) | 2007-01-30 | 2009-11-19 | Tornier Sas | Intra-articular joint replacement |
GB0705911D0 (en) * | 2007-03-28 | 2007-05-09 | Depuy Int Ltd | A head component of an orthopaedic joint prosthesis |
US8265949B2 (en) | 2007-09-27 | 2012-09-11 | Depuy Products, Inc. | Customized patient surgical plan |
US8357111B2 (en) | 2007-09-30 | 2013-01-22 | Depuy Products, Inc. | Method and system for designing patient-specific orthopaedic surgical instruments |
ES2838598T3 (en) | 2007-09-30 | 2021-07-02 | Depuy Products Inc | Customized, patient-specific orthopedic surgical instrument |
GB0803723D0 (en) * | 2008-02-29 | 2008-04-09 | Depuy Int Ltd | An instrument for use in a joint replacement procedure |
US8170641B2 (en) * | 2009-02-20 | 2012-05-01 | Biomet Manufacturing Corp. | Method of imaging an extremity of a patient |
DE102009028503B4 (en) | 2009-08-13 | 2013-11-14 | Biomet Manufacturing Corp. | Resection template for the resection of bones, method for producing such a resection template and operation set for performing knee joint surgery |
US8632547B2 (en) | 2010-02-26 | 2014-01-21 | Biomet Sports Medicine, Llc | Patient-specific osteotomy devices and methods |
US9066727B2 (en) | 2010-03-04 | 2015-06-30 | Materialise Nv | Patient-specific computed tomography guides |
USD685474S1 (en) * | 2010-07-06 | 2013-07-02 | Tornier, Inc. | Prosthesis anchor |
US9271744B2 (en) | 2010-09-29 | 2016-03-01 | Biomet Manufacturing, Llc | Patient-specific guide for partial acetabular socket replacement |
US9968376B2 (en) | 2010-11-29 | 2018-05-15 | Biomet Manufacturing, Llc | Patient-specific orthopedic instruments |
US9241745B2 (en) | 2011-03-07 | 2016-01-26 | Biomet Manufacturing, Llc | Patient-specific femoral version guide |
US8992623B2 (en) | 2011-03-25 | 2015-03-31 | Zimmer Gmbh | Shoulder prosthesis |
US8715289B2 (en) | 2011-04-15 | 2014-05-06 | Biomet Manufacturing, Llc | Patient-specific numerically controlled instrument |
US9675400B2 (en) | 2011-04-19 | 2017-06-13 | Biomet Manufacturing, Llc | Patient-specific fracture fixation instrumentation and method |
US8668700B2 (en) | 2011-04-29 | 2014-03-11 | Biomet Manufacturing, Llc | Patient-specific convertible guides |
US8956364B2 (en) | 2011-04-29 | 2015-02-17 | Biomet Manufacturing, Llc | Patient-specific partial knee guides and other instruments |
US8532807B2 (en) | 2011-06-06 | 2013-09-10 | Biomet Manufacturing, Llc | Pre-operative planning and manufacturing method for orthopedic procedure |
US9084618B2 (en) | 2011-06-13 | 2015-07-21 | Biomet Manufacturing, Llc | Drill guides for confirming alignment of patient-specific alignment guides |
US20130001121A1 (en) | 2011-07-01 | 2013-01-03 | Biomet Manufacturing Corp. | Backup kit for a patient-specific arthroplasty kit assembly |
US8764760B2 (en) | 2011-07-01 | 2014-07-01 | Biomet Manufacturing, Llc | Patient-specific bone-cutting guidance instruments and methods |
FR2978912A1 (en) | 2011-08-10 | 2013-02-15 | Tornier Inc | ANCILLARY EXTRACTION OF A PROSTHESIS |
US8597365B2 (en) | 2011-08-04 | 2013-12-03 | Biomet Manufacturing, Llc | Patient-specific pelvic implants for acetabular reconstruction |
US9066734B2 (en) | 2011-08-31 | 2015-06-30 | Biomet Manufacturing, Llc | Patient-specific sacroiliac guides and associated methods |
US9295497B2 (en) | 2011-08-31 | 2016-03-29 | Biomet Manufacturing, Llc | Patient-specific sacroiliac and pedicle guides |
US9386993B2 (en) | 2011-09-29 | 2016-07-12 | Biomet Manufacturing, Llc | Patient-specific femoroacetabular impingement instruments and methods |
US9554910B2 (en) | 2011-10-27 | 2017-01-31 | Biomet Manufacturing, Llc | Patient-specific glenoid guide and implants |
US9451973B2 (en) | 2011-10-27 | 2016-09-27 | Biomet Manufacturing, Llc | Patient specific glenoid guide |
EP2770918B1 (en) | 2011-10-27 | 2017-07-19 | Biomet Manufacturing, LLC | Patient-specific glenoid guides |
KR20130046336A (en) | 2011-10-27 | 2013-05-07 | 삼성전자주식회사 | Multi-view device of display apparatus and contol method thereof, and display system |
US9301812B2 (en) | 2011-10-27 | 2016-04-05 | Biomet Manufacturing, Llc | Methods for patient-specific shoulder arthroplasty |
US9421106B2 (en) | 2011-12-07 | 2016-08-23 | Howmedica Osteonics Corp. | Reverse shoulder baseplate with alignment guide for glenosphere |
US9237950B2 (en) | 2012-02-02 | 2016-01-19 | Biomet Manufacturing, Llc | Implant with patient-specific porous structure |
ES2674693T3 (en) | 2012-03-30 | 2018-07-03 | DePuy Synthes Products, Inc. | A surgical instrument to implant a humeral component |
US8663334B2 (en) * | 2012-05-31 | 2014-03-04 | Howmedica Osteonics Corp. | Lateral entry insert for cup trial |
US8906102B2 (en) * | 2012-05-31 | 2014-12-09 | Howmedica Osteonics Corp. | Lateral entry insert for cup trial |
USD745157S1 (en) * | 2012-11-28 | 2015-12-08 | Optimus Orthopedic Designs LLC | Prosthetic device |
US9060788B2 (en) | 2012-12-11 | 2015-06-23 | Biomet Manufacturing, Llc | Patient-specific acetabular guide for anterior approach |
US9204977B2 (en) | 2012-12-11 | 2015-12-08 | Biomet Manufacturing, Llc | Patient-specific acetabular guide for anterior approach |
WO2014126908A1 (en) * | 2013-02-13 | 2014-08-21 | Smith & Nephew, Inc | Impact resistant medical instruments, implants and methods |
US9839438B2 (en) | 2013-03-11 | 2017-12-12 | Biomet Manufacturing, Llc | Patient-specific glenoid guide with a reusable guide holder |
US9579107B2 (en) | 2013-03-12 | 2017-02-28 | Biomet Manufacturing, Llc | Multi-point fit for patient specific guide |
US9498233B2 (en) | 2013-03-13 | 2016-11-22 | Biomet Manufacturing, Llc. | Universal acetabular guide and associated hardware |
US9826981B2 (en) | 2013-03-13 | 2017-11-28 | Biomet Manufacturing, Llc | Tangential fit of patient-specific guides |
US9517145B2 (en) | 2013-03-15 | 2016-12-13 | Biomet Manufacturing, Llc | Guide alignment system and method |
US20150112349A1 (en) | 2013-10-21 | 2015-04-23 | Biomet Manufacturing, Llc | Ligament Guide Registration |
US10456264B2 (en) | 2014-01-24 | 2019-10-29 | Tornier, Inc. | Humeral implant anchor system |
US12023253B2 (en) | 2014-01-24 | 2024-07-02 | Howmedica Osteonics Corp. | Humeral implant anchor system |
US20150216611A1 (en) * | 2014-01-31 | 2015-08-06 | Biomet Manufacturing, Llc | Orthopaedic implant template and method of making |
US10282488B2 (en) | 2014-04-25 | 2019-05-07 | Biomet Manufacturing, Llc | HTO guide with optional guided ACL/PCL tunnels |
US9408616B2 (en) | 2014-05-12 | 2016-08-09 | Biomet Manufacturing, Llc | Humeral cut guide |
US10575968B2 (en) | 2014-05-16 | 2020-03-03 | Howmedica Osteonics Corp. | Guides for fracture system |
US9681960B2 (en) | 2014-05-16 | 2017-06-20 | Howmedica Osteonics Corp. | Guides for fracture system |
US9561040B2 (en) | 2014-06-03 | 2017-02-07 | Biomet Manufacturing, Llc | Patient-specific glenoid depth control |
US9839436B2 (en) | 2014-06-03 | 2017-12-12 | Biomet Manufacturing, Llc | Patient-specific glenoid depth control |
US9833245B2 (en) | 2014-09-29 | 2017-12-05 | Biomet Sports Medicine, Llc | Tibial tubercule osteotomy |
US9826994B2 (en) | 2014-09-29 | 2017-11-28 | Biomet Manufacturing, Llc | Adjustable glenoid pin insertion guide |
US9820868B2 (en) | 2015-03-30 | 2017-11-21 | Biomet Manufacturing, Llc | Method and apparatus for a pin apparatus |
US10226262B2 (en) | 2015-06-25 | 2019-03-12 | Biomet Manufacturing, Llc | Patient-specific humeral guide designs |
US10568647B2 (en) | 2015-06-25 | 2020-02-25 | Biomet Manufacturing, Llc | Patient-specific humeral guide designs |
GB201522723D0 (en) * | 2015-12-23 | 2016-02-03 | Depuy Ireland Ltd | Device for detecting deformation of a hollow component |
US10390972B2 (en) | 2016-01-15 | 2019-08-27 | Howmedica Osteonics Corp. | Humeral trial adaptor |
US10463499B2 (en) | 2016-03-25 | 2019-11-05 | Tornier, Inc. | Stemless shoulder implant with fixation components |
WO2018022227A1 (en) | 2016-07-28 | 2018-02-01 | Tornier, Inc. | Stemless prosthesis anchor component |
US10722310B2 (en) | 2017-03-13 | 2020-07-28 | Zimmer Biomet CMF and Thoracic, LLC | Virtual surgery planning system and method |
AU2018251815B2 (en) | 2017-04-14 | 2023-12-14 | Shoulder Innovations, Inc. | Total shoulder prosthesis having inset glenoid implant convertible from anatomic to reverse |
EP3687454A2 (en) | 2017-09-25 | 2020-08-05 | Tornier, Inc. | Patient specific stemless prosthesis anchor components |
US11399948B2 (en) | 2017-12-11 | 2022-08-02 | Howmedica Osteonics Corp. | Stemless prosthesis anchor components and kits |
AU2019234645A1 (en) * | 2018-03-12 | 2020-10-29 | Shoulder Innovations, Inc. | Convertible total shoulder prosthesis |
US11051829B2 (en) | 2018-06-26 | 2021-07-06 | DePuy Synthes Products, Inc. | Customized patient-specific orthopaedic surgical instrument |
JP7275256B2 (en) | 2018-10-02 | 2023-05-17 | ハウメディカ オステオニクス コーポレイション | Components and assemblies of shoulder prostheses |
EP3937857A4 (en) | 2019-03-11 | 2022-11-02 | Shoulder Innovations, Inc. | Total reverse shoulder systems and methods |
USD977643S1 (en) | 2019-03-12 | 2023-02-07 | Shoulder Innovations, Inc. | Humeral stem implant |
US11801151B2 (en) | 2019-03-12 | 2023-10-31 | Howmedica Osteonics Corp. | Anatomic shell 2-in-1 window trial |
USD951449S1 (en) | 2019-10-01 | 2022-05-10 | Howmedica Osteonics Corp. | Humeral implant |
CN114502106A (en) | 2019-10-01 | 2022-05-13 | 赫迈迪卡奥斯特尼克斯公司 | Shoulder prosthesis components and assemblies |
Family Cites Families (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1448111A (en) | 1973-01-30 | 1976-09-02 | Crabbe W A | Device for the fixation of bone fractures |
US5217463A (en) * | 1990-04-11 | 1993-06-08 | Mikhail W F Michael | Method for performing knee surgery and retractors for use therein |
US5070623A (en) * | 1990-05-02 | 1991-12-10 | Zimmer, Inc. | Prosthetic gauge |
US5462549A (en) * | 1992-05-01 | 1995-10-31 | Biomet, Inc. | Femoral sizing apparatus |
US5364401A (en) * | 1992-10-08 | 1994-11-15 | Wright Medical Technology, Inc. | External alignment system for preparing a femur for an implant |
US5489309A (en) | 1993-01-06 | 1996-02-06 | Smith & Nephew Richards Inc. | Modular humeral component system |
US5571203A (en) * | 1993-06-18 | 1996-11-05 | Masini; Michael A. | Bone-conserving hip system |
US5800437A (en) * | 1993-11-24 | 1998-09-01 | Orthopaedic Innovations, Inc. | Cannulated tamp and centering rod for total joint arthroplasty |
US5496323A (en) * | 1994-06-02 | 1996-03-05 | Intermedics Orthopedics, Inc. | Orthopedic instrument with quarter-turn disconnect mechanism |
US5514139A (en) * | 1994-09-02 | 1996-05-07 | Hudson Surgical Design, Inc. | Method and apparatus for femoral resection |
FR2727002B1 (en) | 1994-11-18 | 1997-01-03 | Tornier Sa | HUMERAL PROSTHESIS IN SPHERE |
US5683397A (en) * | 1995-02-15 | 1997-11-04 | Smith & Nephew, Inc. | Distal femoral cutting guide apparatus for use in knee joint replacement surgery |
SE9501828D0 (en) | 1995-05-17 | 1995-05-17 | Astra Ab | Cutting guide |
US5733292A (en) * | 1995-09-15 | 1998-03-31 | Midwest Orthopaedic Research Foundation | Arthroplasty trial prosthesis alignment devices and associated methods |
US5704941A (en) * | 1995-11-03 | 1998-01-06 | Osteonics Corp. | Tibial preparation apparatus and method |
US20020072805A1 (en) * | 1996-08-21 | 2002-06-13 | Sullivan John Martin Patrick | Joint replacement prosthesis |
EP0971638A4 (en) * | 1997-01-28 | 2003-07-30 | New York Society | Method and apparatus for femoral resection |
GB9707371D0 (en) * | 1997-04-11 | 1997-05-28 | Minnesota Mining & Mfg | A modular humeral prosthesis |
US6096026A (en) | 1997-09-22 | 2000-08-01 | Jlj Medical Devices, International, Llc | Surgical instruments for minimally invasive surgical procedures |
FR2773469B1 (en) | 1998-01-09 | 2000-03-03 | Alain Leonard | SURGICAL EQUIPMENT FOR THE IMPLANTATION OF A TOTAL SHOULDER PROSTHESIS, AND TOTAL SHOULDER PROSTHESIS |
DE59810997D1 (en) * | 1998-01-16 | 2004-04-22 | Ct Pulse Orthopedics Ltd | Construction kit for socket prostheses |
US6589282B2 (en) * | 1999-12-31 | 2003-07-08 | Implex Corporation | Modular shoulder prostheses |
US6258097B1 (en) * | 2000-06-02 | 2001-07-10 | Bristol-Myers Squibb Co | Head center instrument and method of using the same |
AU2001286968A1 (en) | 2000-09-01 | 2002-03-13 | Eugene M. Wolf | Facile total shoulder arthroplasty apparatus and method |
SE517237C2 (en) | 2000-09-28 | 2002-05-14 | Urban Lindgren | Directional instrument for performing cutting of a femoral neck |
US6780190B2 (en) * | 2001-01-23 | 2004-08-24 | Depuy Orthopaedics, Inc. | Method and apparatus for resecting a greater tubercle from a humerus of a patient during performance of a shoulder replacement procedure |
US6736852B2 (en) * | 2001-02-27 | 2004-05-18 | Incumed, Inc. | Adjustable bone prostheses and related methods |
DE10123517C1 (en) * | 2001-05-15 | 2002-11-28 | Keramed Medizintechnik Gmbh | Shoulder endoprosthesis has a joint connection formed by a protrusion on a middle part clamped by a clamping element from the proximal end of the middle part in a recess in the proximal end of a shaft |
US6783549B1 (en) * | 2001-07-27 | 2004-08-31 | Biomet, Inc. | Modular humeral head resurfacing system |
US20040162619A1 (en) * | 2001-08-27 | 2004-08-19 | Zimmer Technology, Inc. | Tibial augments for use with knee joint prostheses, method of implanting the tibial augment, and associated tools |
US6712823B2 (en) * | 2001-12-14 | 2004-03-30 | Wright Medical Technology Inc. | Humeral head resection guide |
US20040054419A1 (en) | 2002-05-09 | 2004-03-18 | Serra Michael A. | System for trial implantation of a femoral hip prosthesis |
US6863690B2 (en) * | 2002-09-27 | 2005-03-08 | Depuy Products, Inc. | Humeral shoulder prosthesis |
FR2854062B1 (en) * | 2003-04-24 | 2005-06-10 | Aesculap Sa | SIZE MEASURER WITH SIMPLIFIED USE |
US7699853B2 (en) | 2003-10-17 | 2010-04-20 | Zimmer, Inc. | Method and instruments for positioning humeral component during shoulder arthroplasty |
FR2863859B1 (en) | 2003-12-23 | 2006-02-03 | Ct Pulse France Sa | ANCILLARY FOR THE ESTABLISHMENT OF A PROSTHESIS OF RESURFACING A FEMORAL HEAD. |
GB2429164B (en) * | 2004-03-11 | 2008-12-24 | Acumed Llc | Systems for bone replacement |
-
2006
- 2006-06-02 CA CA2610672A patent/CA2610672C/en not_active Expired - Fee Related
- 2006-06-02 WO PCT/IB2006/002187 patent/WO2006136954A1/en active Application Filing
- 2006-06-02 EP EP06779958.5A patent/EP1885295B1/en active Active
- 2006-06-02 JP JP2008514228A patent/JP4864966B2/en active Active
- 2006-06-02 US US11/916,403 patent/US8231682B2/en active Active
- 2006-06-02 AU AU2006260591A patent/AU2006260591B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
JP4864966B2 (en) | 2012-02-01 |
WO2006136954A1 (en) | 2006-12-28 |
CA2610672A1 (en) | 2006-12-28 |
US20090105837A1 (en) | 2009-04-23 |
US8231682B2 (en) | 2012-07-31 |
AU2006260591B2 (en) | 2011-08-25 |
JP2008541913A (en) | 2008-11-27 |
EP1885295B1 (en) | 2013-12-11 |
EP1885295A1 (en) | 2008-02-13 |
AU2006260591A1 (en) | 2006-12-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2610672C (en) | Instrument for use in a joint replacement procedure | |
CA2610674C (en) | Instrument for use in a joint replacement procedure | |
CA2610799C (en) | Instrument for use in a joint replacement procedure | |
EP2777558B1 (en) | Tibial orthopaedic surgical instruments | |
US8123753B2 (en) | Cutting guide assembly | |
US8197487B2 (en) | Reaming guide alignment instrument | |
EP2946752B1 (en) | Tibial trial instruments | |
US8197492B2 (en) | Measuring instrument for version angle | |
US8241289B2 (en) | Manual glenoid reamer | |
US8137359B2 (en) | Variable offset reamer assembly for modular humeral component | |
US11426282B2 (en) | Implants for adding joint inclination to a knee arthroplasty | |
US10136997B2 (en) | Tibial prosthesis for tibia with varus resection | |
US20190247063A1 (en) | Orthopaedic surgical instrument system and method for preparing a patient's calcar | |
US20240197340A1 (en) | Arthroplasty devices, systems, instruments, and methods | |
US20180140428A1 (en) | Patellar implants and trials |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20170602 |